http://gpsnavigationsoftware.net/iphone-navigation-software-igo-vs-navigon/
jablickar.cz – My mini test of iPhone navigation software. You can see iGo My Way (left) and Navigon MobileNavigator in this round. iPhone 3GS is on the left and Navigon is on the right. iGo is a little bit delayed sometimes but the maps looks more accurate. I like the graphics of iGo. Navigon looks a little bit more accurate in terms of GPS position.